Dirty Flash?? 
Yes sir

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Device changes:
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Addressed some IMS logspam
Increase Zram size to 3gigs
Fixed Network Speed indicator
Fixed incall volume control while in loudspeaker

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ROM changes:
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Merged Sept 2021 Android security patches
PixelPropsUtils: Update to September 2021 fingerprint
PixelPropsUtils: switch from redfin (Pixel 5) to barbet (Pixel 5a).
Camera: fix possible nullptr on setCallbacks
Settings: Adjust one shot auto-brightness strings
Settings: Default device name to marketname if available
Settings: notifications: Add title for Advanced settings
SettingsProvider: Set device name to marketname if available
WifiApConfigStore: Use device model as default hotspot SSID
btif: Use marketname as BT device name if available
sepolicy: Expose faceunlock prop for all
sepolicy: Expose hal1 camera list prop
wifi: Use marketname as hotspot SSID if available
PixelPropsUtils: Do not spoof the device as a Pixel for Pixel Buds
PixelPropsUtils: Spoof Pixel 2 for GMS (aka Safetynet fix)
GamingMode: Hide danmaku container immediately when config is changed
GamingMode: Hide floating button after periods of time
GamingMode: Limit the button coordinate to the inside of screen only
PixelPropsUtils: add galaxy watch 4 plugin to spoof list
Settings: Allow to disable permissions hub
SUPL: Don't send IMSI / Phone number to SUPL server
SystemUI: Limit Keyguard charging stats updates
base: SystemUI: add delete action for partial screenshot notification
base: FPS Info: Make new formatting works with old kernel
Add the support of the three fields in MMS/SMS database
PowerUI: Mute logcat spam